.login {
    background-color: #fff;
    width: 100vw;
    height: 100vh;
    position: relative;
    .login_box{
        width: 450px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%,-50%);
    }
    img {
        display: block;
        margin: 10px auto 20px;
    }
}